WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 406497

CAS#: 959763-06-5

Description: CH5138303 is a novel and potent HSP90 inhibitor. CH5138303 showed high binding affinity for N-terminal Hsp90α (Kd=0.52nM) and strong in vitro cell growth inhibition against human cancer cell lines (HCT116 IC50=0.098μM, NCI-N87 IC50=0.066μM) and also displayed high oral bioavailability in mice (F=44.0%) and potent antitumor efficacy in a human NCI-N87 gastric cancer xenograft model (tumor growth inhibition=136%).

Chemical Structure

CAS# 959763-06-5

Theoretical Analysis

MedKoo Cat#: 406497
Name: CH5138303
CAS#: 959763-06-5
Chemical Formula: C19H18ClN5O2S
Exact Mass: 415.08697
Molecular Weight: 415.89652
Elemental Analysis: C, 54.87; H, 4.36; Cl, 8.52; N, 16.84; O, 7.69; S, 7.71

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: CH5138303; CH-5138303; CH 5138303.

IUPAC/Chemical Name: 4-((4-amino-6-(5-chloro-1,3-dihydrobenzo[de]isochromen-6-yl)-1,3,5-triazin-2-yl)thio)butanamide


InChi Code: InChI=1S/C19H18ClN5O2S/c20-13-7-11-9-27-8-10-3-1-4-12(15(10)11)16(13)17-23-18(22)25-19(24-17)28-6-2-5-14(21)26/h1,3-4,7H,2,5-6,8-9H2,(H2,21,26)(H2,22,23,24,25)


Appearance: white solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 415.89652 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

Molarity Calculator

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1: Suda A, Kawasaki K, Komiyama S, Isshiki Y, Yoon DO, Kim SJ, Na YJ, Hasegawa K, Fukami TA, Sato S, Miura T, Ono N, Yamazaki T, Saitoh R, Shimma N, Shiratori Y, Tsukuda T. Design and synthesis of 2-amino-6-(1H,3H-benzo[de]isochromen-6-yl)-1,3,5-triazines as novel Hsp90 inhibitors. Bioorg Med Chem. 2014 Jan 15;22(2):892-905. doi: 10.1016/j.bmc.2013.11.036. Epub 2013 Nov 25. PubMed PMID: 24369839.

Additional Information

Structure comparison between   CH5015765 ,  CH5138303 and CH5164804